Data Definition Language (DDL) Reference Manual

Introduction to DDL

Data Definition Language (DDL) Reference Manual—529431-004

1-3

Compiling and Translating Data Definitions

The main functions of the DDL compiler are:

•

Compiling statements that define data objects

•

Translating compiled definitions to source code for host languages and FUP

The DDL compiler also generates reports on the contents of a dictionary. All DDL

statements and commands are passed as input to the DDL compiler input can be from

a file or directly from a terminal. In either case, the DDL compiler checks the syntax

and semantics of all statements and commands.

The DDL compiler translates the statements that define DDL objects to internal data

definition format. If a dictionary is open for read and write access, the DDL compiler

writes the compiled objects to the dictionary.

If output is requested, the DDL output generator retrieves the compiled object

definitions from the dictionary (if open), translates the definitions to the appropriate

source code, and writes the translated definitions to all open source code files and

devices.

Figure 1-1 on page 1-4 is an overview of the DDL compiler.

SQLMP T9191J01^ACY

T9195J01^AES

T9197J01^AEA

T9191H01^ACX

T9195H01^AER

T9197H01^ADZ

TCP/IP FTP T9552H02^AET T9552H02^AET

TNS/E COBOL

Runtime Library

T0357H01^AAO T0357H01^AAO

Note. Starting H06.20/J06.09 RVUs, DDL is available with the DDL2 object file and the DDL

object file. You can use either of the object files and create definitions. However, the DDL

object file and the DDL2 object file are not compatible with each other. Therefore, when

migrating from one DDL object file to another, you must generate the schema from the existing

dictionary.

Products J-Series SPR H-Series SPR